TY - JOUR
T1 - New instrumentation for optical measuring of oxygen in gas or dissolved in liquids
AU - Trettnak, W.
AU - Gruber, Wilfried
AU - Reininger, F.
AU - O'Leary, Paul
AU - Klimant, I.
PY - 1996/1/1
Y1 - 1996/1/1
N2 - The optical oxygen sensor is a novel device for the determination of oxygen in gases or dissolved in liquids. It is based on the measurement principle of fluorescence quenching, which is completely different from that of polarographic oxygen sensors (today the most widespread devices for oxygen detection). The new instrument offers features and advantages, which render it not only a realistic alternative, but, for specific applications, make it superior to existing electrochemical methods. The system is based on low-cost semiconductor devices (light-emitting diodes, photodiodes, low-cost analogue and digital components) and new LED-compatible oxygen-sensitive membranes. The flow cell of the instrument may be thermostatted and the sensor can be calibrated by a simple two-point calibration procedure. The optical oxygen sensor is particularly suitable for measuring dissolved oxygen in respirometry, since no oxygen is consumed by the device and the signal is independent of sample flowrate or stirring speed. Typical fields of application are monitoring of oxygen in ground and drinking water, in process controll in bioreactors and in breath gas and blood gas analysis.
AB - The optical oxygen sensor is a novel device for the determination of oxygen in gases or dissolved in liquids. It is based on the measurement principle of fluorescence quenching, which is completely different from that of polarographic oxygen sensors (today the most widespread devices for oxygen detection). The new instrument offers features and advantages, which render it not only a realistic alternative, but, for specific applications, make it superior to existing electrochemical methods. The system is based on low-cost semiconductor devices (light-emitting diodes, photodiodes, low-cost analogue and digital components) and new LED-compatible oxygen-sensitive membranes. The flow cell of the instrument may be thermostatted and the sensor can be calibrated by a simple two-point calibration procedure. The optical oxygen sensor is particularly suitable for measuring dissolved oxygen in respirometry, since no oxygen is consumed by the device and the signal is independent of sample flowrate or stirring speed. Typical fields of application are monitoring of oxygen in ground and drinking water, in process controll in bioreactors and in breath gas and blood gas analysis.
UR - http://www.scopus.com/inward/record.url?scp=0029681804&partnerID=8YFLogxK
U2 - 10.1016/0273-1177(95)00870-K
DO - 10.1016/0273-1177(95)00870-K
M3 - Article
C2 - 11538790
AN - SCOPUS:0029681804
SN - 0273-1177
VL - 18.1996
SP - 139
EP - 148
JO - Advances in Space Research
JF - Advances in Space Research
IS - 4-5
ER -